diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/psim/shmsupp/lock.c')
-rw-r--r-- | c/src/lib/libbsp/powerpc/psim/shmsupp/lock.c | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/c/src/lib/libbsp/powerpc/psim/shmsupp/lock.c b/c/src/lib/libbsp/powerpc/psim/shmsupp/lock.c deleted file mode 100644 index 6c0907e30f..0000000000 --- a/c/src/lib/libbsp/powerpc/psim/shmsupp/lock.c +++ /dev/null @@ -1,64 +0,0 @@ -/* Shared Memory Lock Routines - * - * This shared memory locked queue support routine need to be - * able to lock the specified locked queue. Interrupts are - * disabled while the queue is locked to prevent preemption - * and deadlock when two tasks poll for the same lock. - * previous level. - * - * COPYRIGHT (c) 1989-2008. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may in - * the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#include <rtems.h> -#include <bsp.h> -#include <shm_driver.h> -#include <psim.h> - -/* - * Shm_Initialize_lock - * - * Initialize the lock for the specified locked queue. - */ - -void Shm_Initialize_lock( - Shm_Locked_queue_Control *lq_cb -) -{ - /* nothing required -- done implicitly by device tree */ -} - -/* void _Shm_Lock( &lq_cb ) - * - * This shared memory locked queue support routine locks the - * specified locked queue. It disables interrupts to prevent - * a deadlock condition. - */ - -static rtems_interrupt_level level; - -void Shm_Lock( - Shm_Locked_queue_Control *lq_cb -) -{ - rtems_interrupt_disable( level ); - (void) PSIM.Semaphore.lock; -} - -/* - * Shm_Unlock - * - * Unlock the lock for the specified locked queue. - */ - -void Shm_Unlock( - Shm_Locked_queue_Control *lq_cb -) -{ - (void) PSIM.Semaphore.unlock; - rtems_interrupt_enable( level ); -} |